Microsoft has specified that the Too Human demo will be available this afternoon from 6pm on Xbox Live.
It offers the entire first level of the vikings-in-space adventure for you to wade through, where you can batter waves of goblin robots with big mallets.
The demo should also give you your first taste of the Norse pantomime plot, where you, as Odin's son Baldur, refuse to give your humanity to the machines, and get caught in love triangles and soap opera bickering along the way.